Add Nextcloud deployment and configuration

- Introduced Nextcloud module with Kubernetes resources including deployment, service, ingress, and cron job.
- Configured Apache settings for Nextcloud with SSL support and compression.
- Created secrets for mail and admin credentials.
- Added necessary environment variables for Nextcloud configuration.
- Removed unused Scaleway access and secret keys from secrets and variables.
- Updated CoreDNS module to support custom host overrides.
- Implemented backup bucket policies and lifecycle rules for Scaleway object storage.
- Enhanced IAM policies and applications for backup and email services.
- Added outputs for backup bucket and API keys.

terraform/apps/dev-01/databases.tf

@@ -0,0 +1,17 @@
+module "nextcloud_db" {
+  source = "../../modules/db/mariadb"
+
+  namespace = module.nextcloud.namespace
+  app_name  = "nextcloud"
+
+  app_password   = local.nextcloud_db_passwd
+  root_password  = local.nextcloud_db_root_password
+  retention_days = local.backup_retention_days
+  cron_schedule  = local.backup_cron_schedule
+
+  database_folder = local.nextcloud_db_path
+  backup_folder   = local.backup_folder
+
+  tls_enabled = true
+  issuer      = local.internal_issuer
+}